This GigaPan is a detail of the Taconic Angular Unconformity exposed near the east end of the roadcut illustrated in the GigaPan of the Lower Helderberg Group (). The Ordovician Austin Glen Formation (flysch, right) lies below the angular unconformity and the Silurian Rondout formation constitutes the relatively more resistant layers above the unconformity surface (left) (Marshak and Engelder, 1987).